/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:42:34,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:42:34,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:42:34,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:42:34,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:42:34,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:42:34,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:42:34,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:42:34,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:42:34,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:42:34,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:42:34,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:42:34,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:42:34,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:42:34,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:42:34,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:42:34,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:42:34,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:42:34,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:42:34,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:42:34,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:42:34,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:42:34,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:42:34,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:42:34,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:42:34,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:42:34,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:42:34,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:42:34,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:42:34,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:42:34,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:42:34,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:42:34,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:42:34,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:42:34,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:42:34,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:42:34,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:42:34,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:42:34,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:42:34,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:42:34,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:42:34,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:42:34,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:42:34,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:42:34,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:42:34,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:42:34,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:42:34,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:42:34,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:42:34,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:42:34,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:42:34,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:42:34,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:42:34,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:42:34,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:42:34,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:42:34,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:42:34,839 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:42:34,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:42:34,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:42:34,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:42:34,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:42:34,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:42:34,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:42:34,841 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:42:35,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:42:35,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:42:35,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:42:35,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:42:35,254 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:42:35,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2021-02-21 20:42:35,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344f0e8fb/f2233d3816e244c5a525168d9f28cf9b/FLAGcc55e0c06 [2021-02-21 20:42:36,050 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:42:36,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2021-02-21 20:42:36,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344f0e8fb/f2233d3816e244c5a525168d9f28cf9b/FLAGcc55e0c06 [2021-02-21 20:42:36,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344f0e8fb/f2233d3816e244c5a525168d9f28cf9b [2021-02-21 20:42:36,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:42:36,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:42:36,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:42:36,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:42:36,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:42:36,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:42:36" (1/1) ... [2021-02-21 20:42:36,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e77c671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:36, skipping insertion in model container [2021-02-21 20:42:36,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:42:36" (1/1) ... [2021-02-21 20:42:36,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:42:36,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:42:36,871 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i[24521,24534] [2021-02-21 20:42:36,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:42:36,886 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:42:36,928 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i[24521,24534] [2021-02-21 20:42:36,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:42:37,017 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:42:37,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37 WrapperNode [2021-02-21 20:42:37,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:42:37,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:42:37,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:42:37,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:42:37,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (1/1) ... [2021-02-21 20:42:37,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (1/1) ... [2021-02-21 20:42:37,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (1/1) ... [2021-02-21 20:42:37,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (1/1) ... [2021-02-21 20:42:37,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (1/1) ... [2021-02-21 20:42:37,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (1/1) ... [2021-02-21 20:42:37,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (1/1) ... [2021-02-21 20:42:37,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:42:37,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:42:37,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:42:37,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:42:37,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:42:37,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:42:37,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:42:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:42:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 20:42:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 20:42:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-21 20:42:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2021-02-21 20:42:37,218 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2021-02-21 20:42:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2021-02-21 20:42:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2021-02-21 20:42:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2021-02-21 20:42:37,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:42:37,219 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:42:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:42:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:42:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:42:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:42:37,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:42:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:42:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 20:42:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 20:42:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:42:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:42:37,221 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:42:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:42:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:42:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:42:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:42:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:42:37,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:42:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:42:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:42:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:42:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:42:37,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:42:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:42:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:42:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:42:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:42:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:42:37,224 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:42:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:42:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:42:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:42:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:42:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:42:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:42:37,225 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:42:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:42:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:42:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:42:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:42:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:42:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:42:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:42:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:42:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:42:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:42:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:42:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:42:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:42:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:42:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:42:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:42:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:42:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:42:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:42:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:42:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:42:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:42:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:42:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:42:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:42:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:42:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:42:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 20:42:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:42:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:42:37,230 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:42:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:42:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:42:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:42:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:42:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:42:37,231 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:42:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:42:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:42:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:42:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:42:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:42:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:42:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:42:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:42:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:42:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:42:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:42:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:42:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:42:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:42:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:42:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:42:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:42:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:42:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:42:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:42:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:42:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:42:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:42:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:42:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:42:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:42:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:42:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:42:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:42:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:42:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:42:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:42:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:42:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:42:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:42:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:42:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:42:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:42:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-21 20:42:37,237 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2021-02-21 20:42:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:42:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:42:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2021-02-21 20:42:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:42:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2021-02-21 20:42:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:42:37,238 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2021-02-21 20:42:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2021-02-21 20:42:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:42:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-21 20:42:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:42:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:42:37,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:42:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:42:37,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:42:37,807 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-21 20:42:38,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:42:38,037 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 20:42:38,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:42:38 BoogieIcfgContainer [2021-02-21 20:42:38,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:42:38,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:42:38,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:42:38,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:42:38,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:42:36" (1/3) ... [2021-02-21 20:42:38,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2987e95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:42:38, skipping insertion in model container [2021-02-21 20:42:38,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:37" (2/3) ... [2021-02-21 20:42:38,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2987e95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:42:38, skipping insertion in model container [2021-02-21 20:42:38,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:42:38" (3/3) ... [2021-02-21 20:42:38,049 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2021-02-21 20:42:38,056 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:42:38,062 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:42:38,082 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:42:38,128 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:42:38,128 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:42:38,128 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:42:38,129 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:42:38,129 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:42:38,129 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:42:38,129 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:42:38,129 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:42:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2021-02-21 20:42:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-21 20:42:38,160 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:38,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:38,162 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:38,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash -671159745, now seen corresponding path program 1 times [2021-02-21 20:42:38,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:38,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565411682] [2021-02-21 20:42:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:38,260 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:38,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:38,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:38,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-21 20:42:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:38,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 20:42:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:38,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:42:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:38,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:38,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-21 20:42:38,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565411682] [2021-02-21 20:42:38,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:38,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:42:38,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586543113] [2021-02-21 20:42:38,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:42:38,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:38,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:42:38,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:42:38,521 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 4 states. [2021-02-21 20:42:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:38,903 INFO L93 Difference]: Finished difference Result 294 states and 342 transitions. [2021-02-21 20:42:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:42:38,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2021-02-21 20:42:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:38,917 INFO L225 Difference]: With dead ends: 294 [2021-02-21 20:42:38,917 INFO L226 Difference]: Without dead ends: 127 [2021-02-21 20:42:38,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:42:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-02-21 20:42:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2021-02-21 20:42:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-02-21 20:42:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2021-02-21 20:42:38,990 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 58 [2021-02-21 20:42:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:38,991 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2021-02-21 20:42:38,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:42:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2021-02-21 20:42:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-02-21 20:42:38,996 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:38,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:38,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:42:38,997 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:38,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1231344721, now seen corresponding path program 1 times [2021-02-21 20:42:38,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:38,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125062685] [2021-02-21 20:42:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:39,005 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:39,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:39,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:39,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:39,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:39,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:39,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:39,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:39,206 WARN L141 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-02-21 20:42:39,209 WARN L147 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size 11 [2021-02-21 20:42:39,231 WARN L141 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size [2021-02-21 20:42:39,233 WARN L147 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size 19 [2021-02-21 20:42:39,262 WARN L141 QuantifierPusher]: treesize reduction 12, result has 61.3 percent of original size [2021-02-21 20:42:39,265 WARN L147 QuantifierPusher]: treesize reduction 12, result has 61.3 percent of original size 19 [2021-02-21 20:42:39,294 WARN L141 QuantifierPusher]: treesize reduction 12, result has 58.6 percent of original size [2021-02-21 20:42:39,296 WARN L147 QuantifierPusher]: treesize reduction 12, result has 58.6 percent of original size 17 [2021-02-21 20:42:39,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:39,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 20:42:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:39,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:39,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:39,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:39,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:42:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:39,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-02-21 20:42:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:39,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:39,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-21 20:42:39,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125062685] [2021-02-21 20:42:39,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:39,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:42:39,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158800156] [2021-02-21 20:42:39,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:42:39,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:39,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:42:39,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:42:39,563 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand 15 states. [2021-02-21 20:42:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:41,039 INFO L93 Difference]: Finished difference Result 279 states and 305 transitions. [2021-02-21 20:42:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 20:42:41,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2021-02-21 20:42:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:41,048 INFO L225 Difference]: With dead ends: 279 [2021-02-21 20:42:41,049 INFO L226 Difference]: Without dead ends: 173 [2021-02-21 20:42:41,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-02-21 20:42:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-02-21 20:42:41,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2021-02-21 20:42:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2021-02-21 20:42:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2021-02-21 20:42:41,123 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 73 [2021-02-21 20:42:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:41,124 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2021-02-21 20:42:41,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:42:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2021-02-21 20:42:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-21 20:42:41,135 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:41,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:41,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:42:41,136 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:41,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:41,137 INFO L82 PathProgramCache]: Analyzing trace with hash -647964724, now seen corresponding path program 1 times [2021-02-21 20:42:41,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:41,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230385602] [2021-02-21 20:42:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:41,150 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:41,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:41,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:41,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:41,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:41,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:41,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:41,296 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-21 20:42:41,297 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-21 20:42:41,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:42:41,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:42:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:41,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:41,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:41,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:41,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-21 20:42:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:41,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-21 20:42:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:41,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:41,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:41,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230385602] [2021-02-21 20:42:41,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:41,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:42:41,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188241719] [2021-02-21 20:42:41,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:42:41,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:41,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:42:41,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:42:41,428 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand 12 states. [2021-02-21 20:42:42,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:42,731 INFO L93 Difference]: Finished difference Result 317 states and 352 transitions. [2021-02-21 20:42:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-21 20:42:42,731 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2021-02-21 20:42:42,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:42,735 INFO L225 Difference]: With dead ends: 317 [2021-02-21 20:42:42,735 INFO L226 Difference]: Without dead ends: 210 [2021-02-21 20:42:42,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-02-21 20:42:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-02-21 20:42:42,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 158. [2021-02-21 20:42:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-02-21 20:42:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 171 transitions. [2021-02-21 20:42:42,778 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 171 transitions. Word has length 75 [2021-02-21 20:42:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:42,778 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 171 transitions. [2021-02-21 20:42:42,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:42:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 171 transitions. [2021-02-21 20:42:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-21 20:42:42,781 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:42,781 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:42,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:42:42,782 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:42,783 INFO L82 PathProgramCache]: Analyzing trace with hash -758130634, now seen corresponding path program 1 times [2021-02-21 20:42:42,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:42,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887668807] [2021-02-21 20:42:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:42,788 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:42,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:42,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:42,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:42,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:42,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:42,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:42,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:42,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:42,882 WARN L141 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size [2021-02-21 20:42:42,883 WARN L147 QuantifierPusher]: treesize reduction 7, result has 61.1 percent of original size 11 [2021-02-21 20:42:42,897 WARN L141 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size [2021-02-21 20:42:42,898 WARN L147 QuantifierPusher]: treesize reduction 16, result has 54.3 percent of original size 19 [2021-02-21 20:42:42,918 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-21 20:42:42,920 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-21 20:42:42,943 WARN L141 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-02-21 20:42:42,945 WARN L147 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size 21 [2021-02-21 20:42:42,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:42,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:42:42,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:42,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:43,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-21 20:42:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:43,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:43,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:43,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 20:42:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:43,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:43,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-21 20:42:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:43,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:43,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:43,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887668807] [2021-02-21 20:42:43,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:43,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 20:42:43,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025011930] [2021-02-21 20:42:43,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 20:42:43,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:43,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 20:42:43,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:42:43,059 INFO L87 Difference]: Start difference. First operand 158 states and 171 transitions. Second operand 11 states. [2021-02-21 20:42:43,413 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-02-21 20:42:43,584 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-02-21 20:42:43,717 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-02-21 20:42:43,985 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-02-21 20:42:44,131 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-02-21 20:42:44,581 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-02-21 20:42:44,702 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-02-21 20:42:44,848 WARN L202 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-02-21 20:42:44,994 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-02-21 20:42:45,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:45,256 INFO L93 Difference]: Finished difference Result 346 states and 379 transitions. [2021-02-21 20:42:45,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 20:42:45,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2021-02-21 20:42:45,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:45,264 INFO L225 Difference]: With dead ends: 346 [2021-02-21 20:42:45,264 INFO L226 Difference]: Without dead ends: 208 [2021-02-21 20:42:45,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2021-02-21 20:42:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-02-21 20:42:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 165. [2021-02-21 20:42:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-21 20:42:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-02-21 20:42:45,364 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 83 [2021-02-21 20:42:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:45,367 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-02-21 20:42:45,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 20:42:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-02-21 20:42:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-02-21 20:42:45,377 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:45,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:45,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:42:45,378 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:45,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1367874093, now seen corresponding path program 1 times [2021-02-21 20:42:45,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:45,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954071013] [2021-02-21 20:42:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:45,503 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:42:45,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-21 20:42:45,628 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:45,635 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:45,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:45,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:42:45,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:45,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:42:45,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:45,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:45,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:45,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:45,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:42:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:45,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:45,828 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-21 20:42:45,828 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-21 20:42:45,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:45,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:45,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:45,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 20:42:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:45,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:45,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-21 20:42:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:45,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:45,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:45,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:45,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954071013] [2021-02-21 20:42:45,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:45,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 20:42:45,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427930818] [2021-02-21 20:42:45,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 20:42:45,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:45,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 20:42:45,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:42:45,952 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand 13 states. [2021-02-21 20:42:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:46,811 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2021-02-21 20:42:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:42:46,811 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2021-02-21 20:42:46,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:46,815 INFO L225 Difference]: With dead ends: 215 [2021-02-21 20:42:46,815 INFO L226 Difference]: Without dead ends: 209 [2021-02-21 20:42:46,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-02-21 20:42:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-02-21 20:42:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 185. [2021-02-21 20:42:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-02-21 20:42:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 203 transitions. [2021-02-21 20:42:46,865 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 203 transitions. Word has length 84 [2021-02-21 20:42:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:46,867 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 203 transitions. [2021-02-21 20:42:46,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 20:42:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 203 transitions. [2021-02-21 20:42:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-21 20:42:46,871 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:46,871 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:46,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:42:46,871 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:46,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1155760493, now seen corresponding path program 2 times [2021-02-21 20:42:46,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:46,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888134898] [2021-02-21 20:42:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:46,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:46,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:42:46,933 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:46,936 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:46,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:46,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:46,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:46,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:46,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:46,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:46,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:46,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:46,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:47,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:47,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:47,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:47,037 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-21 20:42:47,038 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-21 20:42:47,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:47,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:47,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:47,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:42:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:47,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:47,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:47,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-21 20:42:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:47,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:47,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-02-21 20:42:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:47,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:47,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:47,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888134898] [2021-02-21 20:42:47,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:47,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:42:47,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289486602] [2021-02-21 20:42:47,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:42:47,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:47,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:42:47,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:42:47,204 INFO L87 Difference]: Start difference. First operand 185 states and 203 transitions. Second operand 14 states. [2021-02-21 20:42:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:48,981 INFO L93 Difference]: Finished difference Result 325 states and 364 transitions. [2021-02-21 20:42:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-21 20:42:48,981 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2021-02-21 20:42:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:48,984 INFO L225 Difference]: With dead ends: 325 [2021-02-21 20:42:48,984 INFO L226 Difference]: Without dead ends: 231 [2021-02-21 20:42:48,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2021-02-21 20:42:48,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-02-21 20:42:49,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 164. [2021-02-21 20:42:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-21 20:42:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 179 transitions. [2021-02-21 20:42:49,015 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 179 transitions. Word has length 85 [2021-02-21 20:42:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:49,015 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 179 transitions. [2021-02-21 20:42:49,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:42:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 179 transitions. [2021-02-21 20:42:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-21 20:42:49,017 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:49,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:49,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:42:49,017 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:49,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1054815585, now seen corresponding path program 1 times [2021-02-21 20:42:49,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:49,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130036827] [2021-02-21 20:42:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:49,126 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:42:49,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-21 20:42:49,189 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:49,192 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:49,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:49,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:49,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:49,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:49,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:49,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:49,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:49,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:49,275 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-21 20:42:49,276 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-21 20:42:49,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:42:49,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:42:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:49,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:49,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:49,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:49,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:42:49,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:42:49,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 20:42:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:49,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-21 20:42:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:49,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:49,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:49,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130036827] [2021-02-21 20:42:49,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:49,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:42:49,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460203409] [2021-02-21 20:42:49,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:42:49,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:49,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:42:49,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:42:49,485 INFO L87 Difference]: Start difference. First operand 164 states and 179 transitions. Second operand 15 states. [2021-02-21 20:42:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:51,024 INFO L93 Difference]: Finished difference Result 342 states and 385 transitions. [2021-02-21 20:42:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-21 20:42:51,025 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2021-02-21 20:42:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:51,028 INFO L225 Difference]: With dead ends: 342 [2021-02-21 20:42:51,028 INFO L226 Difference]: Without dead ends: 243 [2021-02-21 20:42:51,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-02-21 20:42:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-21 20:42:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 187. [2021-02-21 20:42:51,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2021-02-21 20:42:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 204 transitions. [2021-02-21 20:42:51,062 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 204 transitions. Word has length 91 [2021-02-21 20:42:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:51,062 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 204 transitions. [2021-02-21 20:42:51,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:42:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 204 transitions. [2021-02-21 20:42:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-02-21 20:42:51,064 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:51,064 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:51,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:42:51,065 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:51,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:51,066 INFO L82 PathProgramCache]: Analyzing trace with hash 117500582, now seen corresponding path program 2 times [2021-02-21 20:42:51,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:51,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190754552] [2021-02-21 20:42:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:51,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-21 20:42:51,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-21 20:42:51,379 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:51,383 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:51,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:51,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:51,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 20:42:51,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:51,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:51,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:51,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:42:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:51,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:51,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:51,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:51,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:42:51,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:42:51,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:51,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:51,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:51,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 20:42:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:51,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:51,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:42:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:51,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:51,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:51,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:51,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:51,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:51,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190754552] [2021-02-21 20:42:51,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:51,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-21 20:42:51,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197319645] [2021-02-21 20:42:51,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-21 20:42:51,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:51,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-21 20:42:51,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-02-21 20:42:51,752 INFO L87 Difference]: Start difference. First operand 187 states and 204 transitions. Second operand 18 states. [2021-02-21 20:42:53,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:53,464 INFO L93 Difference]: Finished difference Result 243 states and 267 transitions. [2021-02-21 20:42:53,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 20:42:53,465 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 100 [2021-02-21 20:42:53,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:53,468 INFO L225 Difference]: With dead ends: 243 [2021-02-21 20:42:53,468 INFO L226 Difference]: Without dead ends: 237 [2021-02-21 20:42:53,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2021-02-21 20:42:53,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-02-21 20:42:53,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 213. [2021-02-21 20:42:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-21 20:42:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 236 transitions. [2021-02-21 20:42:53,517 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 236 transitions. Word has length 100 [2021-02-21 20:42:53,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:53,519 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 236 transitions. [2021-02-21 20:42:53,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-21 20:42:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 236 transitions. [2021-02-21 20:42:53,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-02-21 20:42:53,521 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:53,522 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:53,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:42:53,522 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:53,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1495530650, now seen corresponding path program 1 times [2021-02-21 20:42:53,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:53,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599909131] [2021-02-21 20:42:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:53,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:42:53,608 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:53,611 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:53,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:53,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:53,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:53,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:53,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:53,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:53,700 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-21 20:42:53,701 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-21 20:42:53,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:53,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:53,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:42:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:53,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:53,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:53,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:53,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:42:53,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:42:53,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-21 20:42:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:53,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:53,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-21 20:42:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:53,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:53,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:53,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599909131] [2021-02-21 20:42:53,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:53,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 20:42:53,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277019819] [2021-02-21 20:42:53,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 20:42:53,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:53,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 20:42:53,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:42:53,940 INFO L87 Difference]: Start difference. First operand 213 states and 236 transitions. Second operand 17 states. [2021-02-21 20:42:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:56,054 INFO L93 Difference]: Finished difference Result 362 states and 408 transitions. [2021-02-21 20:42:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-21 20:42:56,054 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2021-02-21 20:42:56,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:56,057 INFO L225 Difference]: With dead ends: 362 [2021-02-21 20:42:56,057 INFO L226 Difference]: Without dead ends: 249 [2021-02-21 20:42:56,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=1065, Unknown=0, NotChecked=0, Total=1260 [2021-02-21 20:42:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-02-21 20:42:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 180. [2021-02-21 20:42:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2021-02-21 20:42:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2021-02-21 20:42:56,100 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 101 [2021-02-21 20:42:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:56,100 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2021-02-21 20:42:56,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 20:42:56,101 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2021-02-21 20:42:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-02-21 20:42:56,102 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:56,103 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:56,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:42:56,103 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:56,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1883028884, now seen corresponding path program 3 times [2021-02-21 20:42:56,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:56,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985108839] [2021-02-21 20:42:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:56,228 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:42:56,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-21 20:42:56,394 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:42:56,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-21 20:42:56,456 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:56,459 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:56,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:56,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:56,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:42:56,503 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-21 20:42:56,504 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-21 20:42:56,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:56,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:56,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:56,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:56,548 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-21 20:42:56,549 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-21 20:42:56,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:42:56,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:42:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:56,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:56,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 20:42:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:56,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:56,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:56,630 WARN L141 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-02-21 20:42:56,631 WARN L147 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size 11 [2021-02-21 20:42:56,650 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-21 20:42:56,650 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-21 20:42:56,679 WARN L141 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-02-21 20:42:56,680 WARN L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-02-21 20:42:56,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:42:56,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:42:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:56,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:56,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:56,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985108839] [2021-02-21 20:42:56,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:56,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:42:56,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499534101] [2021-02-21 20:42:56,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:42:56,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:56,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:42:56,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:42:56,749 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand 14 states. [2021-02-21 20:42:57,250 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-02-21 20:42:58,111 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-02-21 20:42:58,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:58,867 INFO L93 Difference]: Finished difference Result 373 states and 424 transitions. [2021-02-21 20:42:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 20:42:58,868 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 107 [2021-02-21 20:42:58,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:58,870 INFO L225 Difference]: With dead ends: 373 [2021-02-21 20:42:58,870 INFO L226 Difference]: Without dead ends: 270 [2021-02-21 20:42:58,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 20:42:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-02-21 20:42:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 210. [2021-02-21 20:42:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-02-21 20:42:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 232 transitions. [2021-02-21 20:42:58,916 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 232 transitions. Word has length 107 [2021-02-21 20:42:58,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:58,917 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 232 transitions. [2021-02-21 20:42:58,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:42:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 232 transitions. [2021-02-21 20:42:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-02-21 20:42:58,919 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:58,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:42:58,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:42:58,919 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:58,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:58,920 INFO L82 PathProgramCache]: Analyzing trace with hash 188137929, now seen corresponding path program 1 times [2021-02-21 20:42:58,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:58,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025521895] [2021-02-21 20:42:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:59,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-21 20:42:59,183 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:42:59,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-21 20:42:59,245 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:59,247 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:59,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:59,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:59,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:42:59,296 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 20:42:59,296 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 20:42:59,304 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 20:42:59,304 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 20:42:59,313 WARN L141 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-02-21 20:42:59,314 WARN L147 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size 26 [2021-02-21 20:42:59,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:59,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:42:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:59,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:59,382 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-21 20:42:59,383 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-21 20:42:59,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:42:59,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:42:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:59,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:59,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 20:42:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:59,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:59,455 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-21 20:42:59,455 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-21 20:42:59,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:42:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-02-21 20:42:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:59,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:59,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:59,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:59,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:59,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:59,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:59,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:59,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:59,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025521895] [2021-02-21 20:42:59,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:59,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-21 20:42:59,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999834199] [2021-02-21 20:42:59,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-21 20:42:59,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:59,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-21 20:42:59,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-02-21 20:42:59,671 INFO L87 Difference]: Start difference. First operand 210 states and 232 transitions. Second operand 20 states. [2021-02-21 20:43:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:43:02,061 INFO L93 Difference]: Finished difference Result 329 states and 385 transitions. [2021-02-21 20:43:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 20:43:02,062 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2021-02-21 20:43:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:43:02,065 INFO L225 Difference]: With dead ends: 329 [2021-02-21 20:43:02,065 INFO L226 Difference]: Without dead ends: 323 [2021-02-21 20:43:02,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2021-02-21 20:43:02,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-02-21 20:43:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 260. [2021-02-21 20:43:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-21 20:43:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 298 transitions. [2021-02-21 20:43:02,132 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 298 transitions. Word has length 109 [2021-02-21 20:43:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:43:02,133 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 298 transitions. [2021-02-21 20:43:02,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-21 20:43:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 298 transitions. [2021-02-21 20:43:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-21 20:43:02,135 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:43:02,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:43:02,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:43:02,136 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:43:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:43:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1503220247, now seen corresponding path program 2 times [2021-02-21 20:43:02,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:43:02,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383703336] [2021-02-21 20:43:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:43:02,247 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:43:02,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-21 20:43:02,409 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:43:02,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-21 20:43:02,465 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:43:02,467 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:43:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:02,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:02,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:43:02,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-02-21 20:43:02,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:43:02,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:43:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:02,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:02,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:43:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:02,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:43:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:02,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:02,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:43:02,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:43:02,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 20:43:02,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 20:43:02,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 20:43:02,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:43:02,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:43:02,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:43:02,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:43:02,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:43:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 20:43:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:02,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-02-21 20:43:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:02,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:43:02,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:43:02,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:02,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:43:03,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:03,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:43:03,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:03,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:43:03,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:03,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-21 20:43:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:43:03,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383703336] [2021-02-21 20:43:03,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:43:03,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-21 20:43:03,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205516144] [2021-02-21 20:43:03,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-21 20:43:03,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:43:03,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-21 20:43:03,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2021-02-21 20:43:03,151 INFO L87 Difference]: Start difference. First operand 260 states and 298 transitions. Second operand 23 states. [2021-02-21 20:43:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:43:06,101 INFO L93 Difference]: Finished difference Result 344 states and 403 transitions. [2021-02-21 20:43:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 20:43:06,102 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 116 [2021-02-21 20:43:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:43:06,105 INFO L225 Difference]: With dead ends: 344 [2021-02-21 20:43:06,105 INFO L226 Difference]: Without dead ends: 334 [2021-02-21 20:43:06,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2021-02-21 20:43:06,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-02-21 20:43:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 301. [2021-02-21 20:43:06,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2021-02-21 20:43:06,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 350 transitions. [2021-02-21 20:43:06,175 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 350 transitions. Word has length 116 [2021-02-21 20:43:06,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:43:06,175 INFO L480 AbstractCegarLoop]: Abstraction has 301 states and 350 transitions. [2021-02-21 20:43:06,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-21 20:43:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 350 transitions. [2021-02-21 20:43:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-02-21 20:43:06,179 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:43:06,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:43:06,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 20:43:06,179 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:43:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:43:06,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1311943245, now seen corresponding path program 2 times [2021-02-21 20:43:06,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:43:06,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935017789] [2021-02-21 20:43:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:43:06,287 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:43:06,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-21 20:43:06,444 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:43:06,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-21 20:43:06,507 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:43:06,509 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:43:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:06,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:06,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:43:06,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:43:06,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:43:06,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:06,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:06,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:43:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:06,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:43:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:06,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:43:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:06,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-21 20:43:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:06,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:43:06,642 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-21 20:43:06,643 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-21 20:43:06,657 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size [2021-02-21 20:43:06,657 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.0 percent of original size 20 [2021-02-21 20:43:06,682 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-21 20:43:06,683 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-21 20:43:06,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:43:06,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:43:06,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:43:06,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:43:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 20:43:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:06,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:06,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:43:06,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935017789] [2021-02-21 20:43:06,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:43:06,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:43:06,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23731234] [2021-02-21 20:43:06,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:43:06,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:43:06,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:43:06,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:43:06,812 INFO L87 Difference]: Start difference. First operand 301 states and 350 transitions. Second operand 16 states. [2021-02-21 20:43:07,356 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-02-21 20:43:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:43:08,874 INFO L93 Difference]: Finished difference Result 546 states and 652 transitions. [2021-02-21 20:43:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-21 20:43:08,876 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 117 [2021-02-21 20:43:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:43:08,879 INFO L225 Difference]: With dead ends: 546 [2021-02-21 20:43:08,879 INFO L226 Difference]: Without dead ends: 411 [2021-02-21 20:43:08,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2021-02-21 20:43:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-02-21 20:43:08,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 325. [2021-02-21 20:43:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2021-02-21 20:43:08,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 384 transitions. [2021-02-21 20:43:08,956 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 384 transitions. Word has length 117 [2021-02-21 20:43:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:43:08,956 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 384 transitions. [2021-02-21 20:43:08,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:43:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 384 transitions. [2021-02-21 20:43:08,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-02-21 20:43:08,959 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:43:08,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:43:08,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 20:43:08,960 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:43:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:43:08,960 INFO L82 PathProgramCache]: Analyzing trace with hash 2082082099, now seen corresponding path program 3 times [2021-02-21 20:43:08,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:43:08,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092781715] [2021-02-21 20:43:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:43:09,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:43:09,020 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:43:09,022 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:43:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:09,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:09,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:43:09,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:43:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:09,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:09,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:43:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:09,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-21 20:43:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:09,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:43:09,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:43:09,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:43:09,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:43:09,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:43:09,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:43:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-21 20:43:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:09,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:43:09,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:43:09,215 WARN L141 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size [2021-02-21 20:43:09,216 WARN L147 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size 11 [2021-02-21 20:43:09,235 WARN L141 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-02-21 20:43:09,236 WARN L147 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size 18 [2021-02-21 20:43:09,267 WARN L141 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-02-21 20:43:09,267 WARN L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-02-21 20:43:09,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:43:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 20:43:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:43:09,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:09,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:43:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:43:09,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092781715] [2021-02-21 20:43:09,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:43:09,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 20:43:09,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119014011] [2021-02-21 20:43:09,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 20:43:09,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:43:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 20:43:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:43:09,341 INFO L87 Difference]: Start difference. First operand 325 states and 384 transitions. Second operand 17 states. [2021-02-21 20:43:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:43:11,032 INFO L93 Difference]: Finished difference Result 514 states and 599 transitions. [2021-02-21 20:43:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 20:43:11,033 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2021-02-21 20:43:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:43:11,035 INFO L225 Difference]: With dead ends: 514 [2021-02-21 20:43:11,036 INFO L226 Difference]: Without dead ends: 339 [2021-02-21 20:43:11,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-02-21 20:43:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-02-21 20:43:11,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 319. [2021-02-21 20:43:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2021-02-21 20:43:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 372 transitions. [2021-02-21 20:43:11,105 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 372 transitions. Word has length 117 [2021-02-21 20:43:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:43:11,106 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 372 transitions. [2021-02-21 20:43:11,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 20:43:11,106 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 372 transitions. [2021-02-21 20:43:11,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-02-21 20:43:11,108 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:43:11,108 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:43:11,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 20:43:11,109 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:43:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:43:11,109 INFO L82 PathProgramCache]: Analyzing trace with hash -668263888, now seen corresponding path program 1 times [2021-02-21 20:43:11,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:43:11,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125562731] [2021-02-21 20:43:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:43:11,231 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:43:11,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:11,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-02-21 20:43:11,417 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-02-21 20:43:11,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:43:11,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-21 20:43:11,483 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:43:11,485 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:43:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:43:11,503 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:43:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:43:11,520 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:43:11,578 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:43:11,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:43:11,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-21 20:43:11,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:43:11 BoogieIcfgContainer [2021-02-21 20:43:11,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:43:11,602 INFO L168 Benchmark]: Toolchain (without parser) took 35271.66 ms. Allocated memory was 151.0 MB in the beginning and 393.2 MB in the end (delta: 242.2 MB). Free memory was 125.9 MB in the beginning and 317.7 MB in the end (delta: -191.8 MB). Peak memory consumption was 51.2 MB. Max. memory is 8.0 GB. [2021-02-21 20:43:11,603 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.7 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:43:11,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.43 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 131.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:43:11,603 INFO L168 Benchmark]: Boogie Preprocessor took 84.83 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 129.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:43:11,603 INFO L168 Benchmark]: RCFGBuilder took 931.41 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 73.7 MB in the end (delta: 55.1 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:43:11,603 INFO L168 Benchmark]: TraceAbstraction took 33560.31 ms. Allocated memory was 151.0 MB in the beginning and 393.2 MB in the end (delta: 242.2 MB). Free memory was 73.2 MB in the beginning and 317.7 MB in the end (delta: -244.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:43:11,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.7 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 673.43 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 131.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 84.83 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 129.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 931.41 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 73.7 MB in the end (delta: 55.1 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33560.31 ms. Allocated memory was 151.0 MB in the beginning and 393.2 MB in the end (delta: 242.2 MB). Free memory was 73.2 MB in the beginning and 317.7 MB in the end (delta: -244.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 641]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L627] CALL, EXPR _get_nondet_int(2, 5) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L627] RET, EXPR _get_nondet_int(2, 5) [L627] const int len = _get_nondet_int(2, 5); [L628] SLL s = sll_create(len); [L628] CALL, EXPR sll_create(len) [L575] SLL head = ((void *)0); [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND FALSE !(len-- > 0) [L584] return head; [L628] RET, EXPR sll_create(len) [L628] SLL s = sll_create(len); [L629] CALL, EXPR _get_nondet_int(0, len - 1) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND TRUE len < until && __VERIFIER_nondet_int() [L622] len++ [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L629] RET, EXPR _get_nondet_int(0, len - 1) [L629] const int k = _get_nondet_int(0, len - 1); [L630] int i = 0; [L631] i < k && __VERIFIER_nondet_int() [L631] i < k && __VERIFIER_nondet_int() [L631] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L636] EXPR \read(s) [L636] CALL, EXPR sll_length(s) [L587] int len = 0; [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND FALSE !(\read(head)) [L592] return len; [L636] RET, EXPR sll_length(s) [L636] COND TRUE k + len != sll_length(s) [L641] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 163 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.4s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 24.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1928 SDtfs, 4272 SDslu, 11832 SDs, 0 SdLazy, 12681 SolverSat, 559 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 598 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1933 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 641 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...